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arXiv 2509.06331cs.CV
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低资源环境下基于模式分析的定量货币评估以辅助视障用户

Quantitative Currency Evaluation in Low-Resource Settings through Pattern Analysis to Assist Visually Impaired Users

Department of Computer Science George Mason University Fairfax, USA(计算机科学系乔治·马歇尔大学弗劳恩斯堡美国)

Md Sultanul Islam Ovi, Mainul Hossain, Md Badsha Biswas

AI总结:

本文提出一个统一货币评估框架,集成轻量级CNN面额分类、UCDI损伤量化和模板匹配伪造检测,在82,000张图像上实现高效实时评估,辅助视障用户。

摘要:

货币识别系统往往忽视可用性和真实性评估,尤其是在低资源环境中,视障用户和离线验证很常见。现有方法侧重于面额分类,但通常忽略物理退化和伪造问题,限制了其在现实条件下的适用性。本文提出了一个统一的货币评估框架,集成了三个模块:使用轻量级CNN模型进行面额分类,通过新颖的统一货币损伤指数(UCDI)进行损伤量化,以及使用基于特征的模板匹配进行伪造检测。数据集包含超过82,000张标注图像,涵盖清洁、受损和伪造纸币。我们的Custom_CNN模型以低参数数量实现了高分类性能。UCDI指标基于二值掩码损失、色度失真和结构特征损失提供连续的可用性评分。伪造检测模块在多种成像条件下展示了对伪造纸币的可靠识别。该框架支持实时、设备端推理,并解决了受限环境中的关键部署挑战。结果表明,准确、可解释且紧凑的解决方案能够支持实际环境中的包容性货币评估。

英文摘要:

Currency recognition systems often overlook usability and authenticity assessment, especially in low-resource environments where visually impaired users and offline validation are common. While existing methods focus on denomination classification, they typically ignore physical degradation and forgery, limiting their applicability in real-world conditions. This paper presents a unified framework for currency evaluation that integrates three modules: denomination classification using lightweight CNN models, damage quantification through a novel Unified Currency Damage Index (UCDI), and counterfeit detection using feature-based template matching. The dataset consists of over 82,000 annotated images spanning clean, damaged, and counterfeit notes. Our Custom_CNN model achieves high classification performance with low parameter count. The UCDI metric provides a continuous usability score based on binary mask loss, chromatic distortion, and structural feature loss. The counterfeit detection module demonstrates reliable identification of forged notes across varied imaging conditions. The framework supports real-time, on-device inference and addresses key deployment challenges in constrained environments. Results show that accurate, interpretable, and compact solutions can support inclusive currency evaluation in practical settings.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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